hide and show palettes (F9) breaks drag and drop

• Apr 20, 2019 - 07:08
Reported version
3.x-dev
Priority
P1 - High
Type
Functional
Frequency
Many
Severity
S3 - Major
Reproducibility
Always
Status
active
Regression
Yes
Workaround
No
Project

Using the latest nightly Linux AppImage (OS: KDE neon User Edition 5.15, Arch.: x86_64, MuseScore version (64-bit): 3.1.0.21902, revision: 27c146f), if I show and hide the palettes once or twice, drag and drop from the palettes to the score stops working. This bug also happens in MuseScore 3.0.5 and 3.1 BETA, but does not happen in MuseScore 2.x. I haven't tested other versions of the 3.x series for this bug.

Steps to reproduce:

  1. Set the palette view to "Advanced", as it seems necessary to trigger this bug.
  2. Expand the Clefs palette.
  3. Drag a clef from the palette into the score.
  4. Press F9 twice to hide and then show the palettes.
  5. Go back to step 3.

Result: After doing steps 3-4 a few times, you will no longer be able to drag a clef into the score, and other palettes will be broken similarly. The drag animation doesn't even start.


Comments

Priority P1 - High

I can confirm on Windows too. Doesn't necessarily fail at firs,t but repeat enough times and eventually it does.

Interestingly, double-click continues to work.